Protecting Garden Beds in Winter by Ruth Clausen

White Pine boughs make a good winter mulch for garden beds

Now that the holidays are over, in northern climates the ground is frozen. This is the time to apply a winter mulch to keep the soil cold and insulate it from alternate freezing and thawing. The action of freezing and thawing, which occurs throughout the winter season, causes shallow-rooted and fall-planted perennials to be heaved out of the ground and roots to become desiccated. I find that members of the coral bells clan—heucheras, heucherellas, and tiarellas-- are particularly prone to heaving.

At this time of year there are plenty of evergreen boughs and discarded Christmas trees around, free for the taking (save those pennies for new plants). These are perfect to cut up and lay gently on frozen beds and borders. If there is still snow on the ground lay the boughs on top. I never got round to cleaning up all the fall leaves, but the evergreen boughs will prevent them from blowing all over the place. As the weather warms in spring gradually remove the boughs to allow new growth to occur.